[patrick ryan]

Thanks Paul,
that seems like a lot of detective work. wish I’d asked first as the whole saga took a few hours in the end by the time I had every tap and bolt out of my garage and looked on the internet. who would have guessed Citroen would have gone their own way? there are lots of weird bolt sizes like 7 and 9 mm so I should have guessed 11 would be next in the sequence.
I ended up tapping out to 12×1.5 on one sill as the threads were knackered and the 7/16 unf on the other which seems to torque up ok. no longer concours then ha ha

[patrick ryan]

Thanks Paul
the securon bolts are a standard 7/16 unf (tpi20)which is said to be the worldwide standard though i note that 11×1.25 bolts are advertised for the 2cv upper mount which is an almost but not quite identical size. I suspect corrosion may have knackered the threads and I was trying to reuse the old bolts which originally needed a lot of force to put in to some of the other rear and front mounts and also a lot of force to remove.screwing them in the sill knackered the ends.Ihave a 7/16 unf tap so will have another go at that and purchase new high tensile bolts. unless I hear different in the next day or two.Thanks for the tip about access.

[Author]

Posts